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Alberto Nisman, Found Dead Sunday, Was Committed to Case But Frustrated After Losing Backing From Officials

By

Juan Forero,

Ryan Dube and

Santiago Pérez

Jan. 19, 2015 7:26 p.m. ET

For federal prosecutor Alberto Nisman—found dead on Sunday—it was a decadelong obsession: trying to bring to justice the perpetrators of the 1994 bombing of a Jewish center in Buenos Aires that left 85 people dead, the worst terror attack on Jews since World War II.

But those who worked with him said the hyperactive, brainy and dogged investigator ended up feeling exasperated by the investigation, particularly after Argentina’s...